Sam Kumar Sachdev's Avatar

Sam Kumar Sachdev

@samsachdev.bsky.social

Founder of Ziporama. I like math and Alf. Ziporama: https://www.ziporama.com/ Alf: https://en.wikipedia.org/wiki/ALF_(TV_series)

162 Followers  |  45 Following  |  398 Posts  |  Joined: 24.11.2024  |  1.9669

Latest posts by samsachdev.bsky.social on Bluesky

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Mapped: Every City With Over 1 Million People How many cities have over 1 million people? This data-driven map charts every single one, giving you a bird’s-eye view of global urbanization.

Lagos, Nigeria, with a population of 16 million (2023), is the largest city in the world (by population), outside of Asia:

www.visualcapitalist.com/mapped-every...

04.08.2025 01:58 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

2/This may make the data more reliable -- not less.

01.08.2025 19:13 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

1/This may create a market for private data. The only barrier to entry to do so is the ability to collect data. Then, there may be private data released that can be compared to each other and to the government data. Then, the measure of quality of data may be the difference the two.

01.08.2025 19:13 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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This is awful. Reliable economic data is a key strength of the US economy.

When Argentina and Greece faked economic data it contributed to major crises.

I don't think Trump will be able to fake the data given the procedures. But there is now a risk plus an awful appearance.

01.08.2025 18:40 β€” πŸ‘ 1088    πŸ” 282    πŸ’¬ 56    πŸ“Œ 25
Actuarial Life Table Actuarial Life Table

Actuarial tables from the Social Security Administration of the death likelihood of a 79 year old (Trump's age) and subsequent four years:

Age 79: 55% chance of dying (for males)
Age 80: 61%
Age 81: 67%
Age 82: 74%

www.ssa.gov/oact/STATS/t...

31.07.2025 17:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Worth pointing out: Russia is one of three countries that Trump has excluded from any (additional) tariffs. (The other two are Belarus and North Korea.)

31.07.2025 04:11 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
We Haven’t Seen Tariffs This High Since the 1930s (w/ Jason Furman)
YouTube video by The Bulwark We Haven’t Seen Tariffs This High Since the 1930s (w/ Jason Furman)

Donald Trump has put tariffs on almost every country in the world. The three exceptions: Russia, North Korea, and Belarus:

www.youtube.com/watch?v=tSOV...

30.07.2025 01:31 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Political Scientist Answers China Questions | Tech Support | WIRED
YouTube video by WIRED Political Scientist Answers China Questions | Tech Support | WIRED

90% of America's antibiotics are imported from China:

(This fact is mentioned at 20:50 in the video.)

www.youtube.com/watch?v=1oh8...

29.07.2025 22:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

It seems that the option "Not Sign" should also be available.

29.07.2025 15:17 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Can a Country Be Too Rich? Norway Is Finding Out A contentious book argues that endless oil revenue and a sovereign wealth fund are making Norway increasingly bloated, unproductive and unhealthy.

The number of sick days that a Norwegian took, on average, for the past 20 years is 28 days per year. For an American, this number is three.

www.bloomberg.com/news/article...

28.07.2025 15:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Stormtrooper VLOG #12: Death Star Tour – with TK-42Greg
YouTube video by Artificial Cheese Stormtrooper VLOG #12: Death Star Tour – with TK-42Greg

Take a tour of the Death Star:

m.youtube.com/watch?v=Z8J0...

25.07.2025 00:39 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Former Inmate From Epstein Prison RIPS Coverup
YouTube video by Breaking Points Former Inmate From Epstein Prison RIPS Coverup

An interview with a former inmate at the same prison Jeffrey Epstein was held, and was also imprisoned in the same area as Epstein, he claims that there’s a prison camera that looks directly onto the front of Epstein’s cell. The claim is made at around the 10 minute mark of the interview:

23.07.2025 17:06 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Silver Hits 14-Year High – Price Manipulation is Breaking Down
YouTube video by ClearValue Tax Silver Hits 14-Year High – Price Manipulation is Breaking Down

The price of silver is now at a 14 year high:

www.youtube.com/watch?v=mFgB...

23.07.2025 16:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Could you please provide a link to either of the reports. (Links to both would be best.)

23.07.2025 15:00 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
A 12-Year Old Solved it in Minutes
YouTube video by Wrath of Math A 12-Year Old Solved it in Minutes

A 12 year old supposedly solved this over lunch:

Prove that among the first positive 2n integers, any collection of n+1 of them must contain a relatively prime pair. (The linked video has the solution.)

m.youtube.com/watch?v=9zws...

19.07.2025 13:48 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Can't Colbert simply move his show online? That is, does he need CBS to distribute the show? (This is a sincere question. Don't know anything about the cost and complexity of producing his show.)

17.07.2025 23:32 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
Regression discontinuity design - Wikipedia

Is there a casual effect of Trump calling those who believe in Epstein files "stupid"? Am going to try and use discontinuous regression on upcoming approval polls. This is a non-parametric test using linear regression to see if there's a difference of Trump's approval rating after this week:

17.07.2025 15:42 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Check out 's stock price (US30Y) in real time Get U.S. 30 Year Treasury (US30Y:Tradeweb) real-time stock quotes, news, price and financial information from CNBC.

The yield on the 30 year Treasury bond is now greater than 5%. The last time it did so was in 2007:

www.cnbc.com/quotes/US30Y

16.07.2025 04:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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US science, by Hilary Price

15.07.2025 14:05 β€” πŸ‘ 158    πŸ” 42    πŸ’¬ 5    πŸ“Œ 2
Patent ownership for AI models heavily concentrated in Mainland China, says Clarivate analyst
YouTube video by CNBC International Live Patent ownership for AI models heavily concentrated in Mainland China, says Clarivate analyst

90% of the patents that involve large language models (presumably filed in the US but this isn't mentioned) are filed from Chinese companies. Specifically, these are all patents filed after 2013:

www.youtube.com/watch?v=Nn54...

14.07.2025 21:18 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

You've outdone yourself. This is brilliant!

14.07.2025 20:00 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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About Epstein-Barr Virus (EBV) Learn about Epstein-Barr virus symptoms, how it's spread, and how to prevent it.

2/

4) The Epstein virus: www.cdc.gov/epstein-barr...

5) The Epstein Group: www.theepsteingroup.org

6) The Epstein Drive: expanse.fandom.com/wiki/Epstein...

7) And, finally, the Epstein files: www.justice.gov/opa/media/14...

13.07.2025 21:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The Epstein Artist Β· 310 monthly listeners.

1/Curious, I typed "The Epstein..." and let Google autocomplete my search. Here's what I found:

1) The Epstein Band: open.spotify.com/artist/0SyeS...

2) The Epstein House: www.tripadvisor.com/Hotel_Review...

3) The Epstein School: www.epsteinatlanta.org

13.07.2025 21:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Pew should find the expected value (in USD) for each of these to determine the rationality of the decision to charge for news. For instance, what's the expected (lifetime) value of a subscriber who pays for news (in this case) versus one ad played for one news article?

13.07.2025 17:50 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Sarah C. M. Paine - Why Dictators Keep Making the Same Fatal Mistake
YouTube video by Dwarkesh Patel Sarah C. M. Paine - Why Dictators Keep Making the Same Fatal Mistake

If the US had a growth rate of 1% less each year, from 1890 to 1999, its per capita income would now be equivalent to present day Mexico's. In other words, it would be six times less than it is today. (This fact is mentioned at 28:50 in the video.)

www.youtube.com/watch?v=YcVS...

13.07.2025 15:36 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

A guess: it’s more for companies and organizations. Consider, if one wants to ask Delta about a delayed flight or complain to KFC about an undead chicken, one wants to know that it isn’t an imitation account. Similarly, one only wants to receive info from verified orgs and companies only.

12.07.2025 23:59 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

According to this survey, the percentage of Republicans who want immigration decreased went from 88%, in 2024, to 48%, this year. This is strange and shocking. How does Gallup determine if this is because of a polling error? That is, is there a way to verify these results?

11.07.2025 20:33 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

What do you suggest is a remedy -- assuming there is one?

09.07.2025 20:18 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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South India set to become global manufacturing hub amid US-China trade tensions The trade war between the US and China is likely to push South India, particularly Tamil Nadu, to become the world's manufacturing hub, according to Krungthep Turakij.

The average hourly manufacturing wage in:

India: $1/hour
Vietnam: $1.60/hour
China: $5.60/hour
South Korea: $21.20/hour

www.nationthailand.com/business/eco...

09.07.2025 16:26 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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